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Perform the indicated operations:__             1.    (2x2 - 3x +2) + (-x2 + x – 2)__             2.    (x2 + 3x -4) + 2(-x + 2)__             3.    (3x2 + 4x -2) – ( x2 - 5x +7)__            4.    (3y2 - y -6) – (4y2 + 5y +3)            5.    (2x + 5) + (-3x – 2)__            6.    (8m – n) - (7n + m) + 3m__            7.    (2x + 3) (x – 1)__             8.    (2x – 3) (x – 2)__             9.    2x ( 4x2 -5x + 3)__           10. (x – 6) (x + 5)_             11. (8xy) (-2xy5)__          12.  (x +2) (x2 -3x + 7)            13.  (2x – 1) (x2 +4x - 6)__         14.   -15xy/ 3x2y__         15.    24x3 -16x2 + 32x/ 8x_         16.    -27a3 + 18a2/-9a2+

Question

Perform the indicated operations:__             1.    (2x2 - 3x +2) + (-x2 + x – 2)__             2.    (x2 + 3x -4) + 2(-x + 2)__             3.    (3x2 + 4x -2) – ( x2 - 5x +7)__            4.    (3y2 - y -6) – (4y2 + 5y +3)            5.    (2x + 5) + (-3x – 2)__            6.    (8m – n) - (7n + m) + 3m__            7.    (2x + 3) (x – 1)__             8.    (2x – 3) (x – 2)__             9.    2x ( 4x2 -5x + 3)__           10. (x – 6) (x + 5)_             11. (8xy) (-2xy5)__          12.  (x +2) (x2 -3x + 7)            13.  (2x – 1) (x2 +4x - 6)__         14.   -15xy/ 3x2y__         15.    24x3 -16x2 + 32x/ 8x_         16.    -27a3 + 18a2/-9a2+

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Solution

  1. (2x^2 - 3x + 2) + (-x^2 + x - 2) = 2x^2 - 3x + 2 - x^2 + x - 2 = (2x^2 - x^2) + (-3x + x) + (2 - 2) = x^2 - 2x

  2. (x^2 + 3x - 4) + 2(-x + 2) = x^2 + 3x - 4 - 2x + 4 = x^2 + x

  3. (3x^2 + 4x - 2) - (x^2 - 5x + 7) = 3x^2 + 4x - 2 - x^2 + 5x - 7 = (3x^2 - x^2) + (4x + 5x) + (-2 - 7) = 2x^2 + 9x - 9

  4. (3y^2 - y - 6) - (4y^2 + 5y + 3) = 3y^2 - y - 6 - 4y^2 - 5y - 3 = (3y^2 - 4y^2) + (-y - 5y) + (-6 - 3) = -y^2 - 6y - 9

  5. (2x + 5) + (-3x - 2) = 2x + 5 - 3x - 2 = (2x - 3x) + (5 - 2) = -x + 3

  6. (8m - n) - (7n + m) + 3m = 8m - n - 7n - m + 3m = (8m - m) + (-n - 7n) + (3m) = 10m - 8n

  7. (2x + 3)(x - 1) = 2x^2 - 2x + 3x - 3 = 2x^2 + x - 3

  8. (2x - 3)(x - 2) = 2x^2 - 4x - 3x + 6 = 2x^2 - 7x + 6

  9. 2x(4x^2 - 5x + 3) = 2x * 4x^2 - 2x * 5x + 2x * 3 = 8x^3 - 10x^2 + 6x

  10. (x - 6)(x + 5) = x^2 + 5x - 6x - 30 = x^2 - x - 30

  11. (8xy)(-2xy^5) = 8xy * -2xy^5 = -16x^2y^6

  12. (x + 2)(x^2 - 3x + 7) = x(x^2 - 3x + 7) + 2(x^2 - 3x + 7) = x^3 - 3x^2 + 7x + 2x^2 - 6x + 14 = x^3 - x^2 + x + 14

  13. (2x - 1)(x^2 + 4x - 6) = 2x(x^2 + 4x - 6) - 1(x^2 + 4x - 6) = 2x^3 + 8x^2 - 12x - x^2 - 4x + 6 = 2x^3 + 7x^2 - 16x + 6

  14. -15xy / 3x^2y = (-15xy) / (3x^2y) = -5 / x

  15. (24x^3 - 16x^2 + 32x) / (8x) = 24x^3 / 8x - 16x^2 / 8x + 32x / 8x = 3x^2 - 2x + 4

  16. (-27a^3 + 18a^2) / (-9a^2) = (-27a^3) / (-9a^2) + (18a^2) / (-9a^2) = 3a + (-2) = 3a - 2

This problem has been solved

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